Tailoring stacking fault energy for high ductility and high strength in ultrafine grained Cu and its alloy

Y. H. Zhao, Y. T. Zhu, X. Z. Liao, Z. Horita, T. G. Langdon

研究成果: Contribution to journalArticle

255 引用 (Scopus)

抜粋

Bulk ultrafine grained (UFG) materials produced by severe plastic deformation often have low ductility. Here the authors report that simultaneous increases in ductility and strength can be achieved by tailoring the stacking fault energy (SFE) via alloying. Specifically, UFG bronze (Cu 10 wt. % Zn) with a SFE of 35 mJ/m 2 was found to have much higher strength and ductility than UFG copper with a SFE of 78 mJ/m 2. Accumulations of both twins and dislocations during tensile testing play a significant role in enhancing the ductility of the UFG bronze. This work demonstrates a strategy for designing UFG alloys with superior mechanical properties.

元の言語英語
記事番号121906
ジャーナルApplied Physics Letters
89
発行部数12
DOI
出版物ステータス出版済み - 9 29 2006

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy (miscellaneous)

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